Dot-matrix printer with font cartridge unit.

摘要

57 A dot-matrix printer of the invention uses a font cartridge unit (22) storing in advance character pattern data corresponding to characters other than standard characters. The font cartridge unit (22) comprises a ROM (43) storing character pattern data in a storage area in units of pages. A CPU (14) sets a given page address in a page address register (30) in the font cartridge unit (22) in the case of dot printing of characters other than standard characters. The CPU (14) reads out desired character pattern data from the storage area of the ROM (43) corresponding to the preset page address, and stores the readout data in a work memory (17). A printing mechanism controller (18) controls a printing mechanism including a print head (11) in accordance with the character pattern data stored in the work memory (17) so as to execute dot printing of, e.g., high-density characters other than standard characters.